code: def set_cache(
      cls, config: MongoStoreClientConfig, client: PyMongoClient
  ) -> None:
      with cls._lock:
          cls.__client_cache__[hash(str(config))] = client
  
imports: from threading import Lock
  from typing import Any
  from typing import Dict
  from typing import Optional
  from typing import Type
  from pymongo.collection import Collection
  from pymongo.database import Database
  from pymongo.errors import ConnectionFailure
  from pymongo.mongo_client import MongoClient
  from result import Err
  from result import Ok
  from result import Result
  from ..serde.serializable import serializable
  from .document_store import PartitionSettings
  from .document_store import StoreClientConfig
  from .document_store import StoreConfig
  from .mongo_codecs import SYFT_CODEC_OPTIONS
label_desc: Use image node_id 2 for calling the MongoClientCache obj's underlying member method code with example usage: obj.set_cache(cls, config, client) without return types